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Cheap flights from Louisville to Sydney from $553

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Louisville to Sydney departing on 5/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Louisville to Sydney

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
6:36 am - 6:35 am
SDF
-
SYD
33h 59m2 stops
Delta Logo
9:15 am - 8:45 am
SYD
-
SDF
37h 30m2 stops
$1,167Delta
Tue, Jun 9 - Wed, Jun 17
Delta Logo
6:36 am - 6:35 am
SDF
-
SYD
33h 59m2 stops
Delta Logo
9:15 am - 8:45 am
SYD
-
SDF
37h 30m2 stops
$1,168Delta
Tue, Jun 9 - Wed, Jun 17
Delta Logo
7:45 am - 7:30 am
SDF
-
SYD
32h 45m2 stops
Delta Logo
9:15 am - 10:43 pm
SYD
-
SDF
27h 28m2 stops
$1,218Delta
Thu, Mar 19 - Sun, Apr 5
Delta Logo
6:00 am - 6:05 am
SDF
-
SYD
33h 05m2 stops
Delta Logo
9:15 am - 9:16 pm
SYD
-
SDF
26h 01m2 stops
$1,219Delta
Thu, Mar 19 - Sun, Apr 5
Delta Logo
7:45 am - 7:30 am
SDF
-
SYD
32h 45m2 stops
Delta Logo
9:15 am - 10:43 pm
SYD
-
SDF
27h 28m2 stops
$1,268Delta
Thu, Mar 19 - Sun, Apr 5
United Airlines Logo
9:15 am - 7:00 am
SDF
-
SYD
29h 45m1 stop
United Airlines Logo
11:50 am - 7:51 pm
SYD
-
SDF
24h 01m1 stop
$1,271United Airlines
Mon, Feb 9 - Thu, Feb 12
United Airlines Logo
9:15 am - 7:00 am
SDF
-
SYD
29h 45m1 stop
United Airlines Logo
11:50 am - 7:51 pm
SYD
-
SDF
24h 01m1 stop
$1,272United Airlines
Mon, Feb 9 - Thu, Feb 12
United Airlines Logo
2:05 pm - 6:20 am
SDF
-
SYD
24h 15m2 stops
United Airlines Logo
11:50 am - 9:46 pm
SYD
-
SDF
25h 56m1 stop
$1,275United Airlines
Mon, Feb 9 - Thu, Feb 12
United Airlines Logo
8:29 am - 6:20 am
SDF
-
SYD
29h 51m2 stops
United Airlines Logo
2:00 pm - 10:13 pm
SYD
-
SDF
24h 13m2 stops
$1,276United Airlines
Mon, Feb 9 - Thu, Feb 12
United Airlines Logo
9:15 am - 7:00 am
SDF
-
SYD
30h 45m1 stop
United Airlines Logo
9:30 am - 10:30 pm
SYD
-
SDF
27h 00m2 stops
$1,367United Airlines
Thu, Mar 19 - Sun, Apr 5

Delta flights from Louisville to Sydney

Our best Delta deals on Louisville to Sydney flight tickets
Delta
Jun 9
SDF6:36 amLouisville Intl
33h 59m
2 stops
SYD6:35 amSydney Kingsford Smith
Jun 17
SYD9:15 amSydney Kingsford Smith
37h 30m
2 stops
SDF8:45 amLouisville Intl
$1,167
Find similar
Delta
Jun 9
SDF6:36 amLouisville Intl
33h 59m
2 stops
SYD6:35 amSydney Kingsford Smith
Jun 17
SYD9:15 amSydney Kingsford Smith
37h 30m
2 stops
SDF8:45 amLouisville Intl
$1,168
Find similar
Delta
Mar 19
SDF7:45 amLouisville Intl
32h 45m
2 stops
SYD7:30 amSydney Kingsford Smith
Apr 5
SYD9:15 amSydney Kingsford Smith
27h 28m
2 stops
SDF10:43 pmLouisville Intl
$1,218
Find similar

United Airlines flights from Louisville to Sydney

Our best United Airlines deals on Louisville to Sydney flight tickets
United Airlines
Feb 9
SDF9:15 amLouisville Intl
29h 45m
1 stop
SYD7:00 amSydney Kingsford Smith
Feb 12
SYD11:50 amSydney Kingsford Smith
24h 01m
1 stop
SDF7:51 pmLouisville Intl
$1,271
Find similar
United Airlines
Feb 9
SDF9:15 amLouisville Intl
29h 45m
1 stop
SYD7:00 amSydney Kingsford Smith
Feb 12
SYD11:50 amSydney Kingsford Smith
24h 01m
1 stop
SDF7:51 pmLouisville Intl
$1,272
Find similar
United Airlines
Feb 9
SDF8:29 amLouisville Intl
29h 51m
2 stops
SYD6:20 amSydney Kingsford Smith
Feb 12
SYD12:10 pmSydney Kingsford Smith
23h 59m
2 stops
SDF8:09 pmLouisville Intl
$1,275
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Louisville to Sydney that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated December 26, 2025.
Use the filters below to find and compare flights from Louisville to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Tue 6/9

6:36 am-6:35 am

2 stops33h 59m

Sydney Kingsford Smith

Wed 6/17

9:15 am-8:45 am

2 stops37h 30m

$1,167

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Tue 6/9

6:36 am-6:35 am

2 stops33h 59m

Sydney Kingsford Smith

Wed 6/17

9:15 am-8:45 am

2 stops37h 30m

$1,168

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Thu 3/19

7:45 am-7:30 am

2 stops32h 45m

Sydney Kingsford Smith

Sun 4/5

9:15 am-10:43 pm

2 stops27h 28m

$1,218

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Thu 3/19

6:00 am-6:05 am

2 stops33h 05m

Sydney Kingsford Smith

Sun 4/5

9:15 am-9:16 pm

2 stops26h 01m

$1,219

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Thu 3/19

7:45 am-7:30 am

2 stops32h 45m

Sydney Kingsford Smith

Sun 4/5

9:15 am-10:43 pm

2 stops27h 28m

$1,268

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Mon 2/9

9:15 am-7:00 am

1 stop29h 45m

Sydney Kingsford Smith

Thu 2/12

11:50 am-7:51 pm

1 stop24h 01m

$1,271

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Mon 2/9

9:15 am-7:00 am

1 stop29h 45m

Sydney Kingsford Smith

Thu 2/12

11:50 am-7:51 pm

1 stop24h 01m

$1,272

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Mon 2/9

2:05 pm-6:20 am

2 stops24h 15m

Sydney Kingsford Smith

Thu 2/12

11:50 am-9:46 pm

1 stop25h 56m

$1,275

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Mon 2/9

8:29 am-6:20 am

2 stops29h 51m

Sydney Kingsford Smith

Thu 2/12

2:00 pm-10:13 pm

2 stops24h 13m

$1,276

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Thu 3/19

9:15 am-7:00 am

1 stop30h 45m

Sydney Kingsford Smith

Sun 4/5

9:30 am-10:30 pm

2 stops27h 00m

$1,367

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
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See travel insights to Sydney from

How to get the cheapest flight ticket from Louisville to Sydney

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Louisville and Sydney?

What is the cheapest month to fly to Sydney?

In general, November is the cheapest month to fly from Louisville to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,142. If you are unable to visit Sydney during the month of November, then departing from Louisville during the month March is also very affordable. Most momondo users find prices during this month for around $1,199.

What is the cheapest day to depart on your flight to Sydney?

The cheapest day to depart from Louisville to Sydney is on a Wednesday when prices can be found for as low as $1,260. The most expensive day to fly to Sydney is Tuesday, with ticket prices averaging around $2,104.

What is the cheapest time of day to depart on your flight to Sydney?

According to our data, the cheapest time of day to fly to Sydney is at noon. momondo users have found flights departing from Louisville to Sydney at noon for as low as $1,343. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Sydney are more costly in the morning, with an average ticket price of $1,798. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

Can stopping save me money on Louisville to Sydney flights?

You could potentially save up to 5% on your flight if you consider stops on a Louisville to Sydney flight.

When to book flights from Louisville to Sydney

Are you open to changing your travel dates? Check out the ideal times to fly from Louisville to Sydney according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Louisville to Sydney (SDF to SYD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Louisville to Sydney

Fastest flight time

23h 30m

Direct flights

None
The fastest flight from Louisville to Sydney takes 23h 30m
There are no direct flights from Louisville to Sydney. There are no popular flight routes from Louisville to Sydney.
Search flight deals

  • How far is Louisville Intl to Sydney Kingsford Smith by plane?

    A flight from Louisville Intl to Sydney Kingsford Smith will travel around 9284.6 mi. A reasonable flight in good conditions will take 23h 30m.

  • When did momondo last update prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?

    Prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?

  • How old do you have to be to fly from Louisville Intl Airport to Sydney Kingsford Smith Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Louisville Intl Airport to Sydney Kingsford Smith Airport.

  • What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

    The required travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sydney Kingsford Smith Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Louisville to Sydney?

Best airlines flying from Louisville to Sydney

Compare and see reviews for airlines that fly from Louisville to Sydney with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $930Free CancellationRating
7.4
9,115 reviews
Search United Airlines flights
DeltaPriceFrom $979Free CancellationRating
7.9
8,013 reviews
Search Delta flights

Traveling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Bondi Beach
Katoomba
Wollongong
Randwick
Coogee
Manly
Penrith
Cronulla
Lithgow
Leura
Charlestown
Terrigal
Swansea

Why use momondo?

Why should I use momondo to find a flight deal from Louisville to Sydney?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Louisville to Sydney for you.

Can I find flights from Louisville to Sydney with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Louisville to Sydney flights to just show those with flexible booking policies.

How can momondo help me find flights from Louisville to Sydney?

momondo provides multiple filters to help you find the best flight to Sydney from Louisville. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Louisville to Sydney right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Louisville to Sydney now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Sydney and let you know when they change.

An easier way to manage your Sydney trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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